MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 42a575352719a76034cd3b2309ffb99728f2be97698a83dfda3eec2b8495b1c1. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
GuLoader
Vendor detections: 19
| SHA256 hash: | 42a575352719a76034cd3b2309ffb99728f2be97698a83dfda3eec2b8495b1c1 |
|---|---|
| SHA3-384 hash: | dd4467ba1a321949ab8396099173ea3ab949b3d9cc34c2eb33dbc2e84a1465f509974c8ce9d140b035ce85953d7d2dc8 |
| SHA1 hash: | f54d87c5c25994892a9a8571b87c961e60de6e9a |
| MD5 hash: | 2a3745c1412f90d2bdeb21dee92abc04 |
| humanhash: | hot-echo-four-fanta |
| File name: | z1NewOrderRFQ20X20PDF.bat |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 366'044 bytes |
| First seen: | 2026-03-11 05:30:07 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (594 x GuLoader, 131 x RemcosRAT, 86 x EpsilonStealer) |
| ssdeep | 6144:wRlWoXbJ7CjFlfhmK9cav2wNdnaN1JjV3ZM2M4bW+4NvaqbSATa:4R7CjffLr2wNdna1Jp3mWbnqa |
| Threatray | 2'449 similar samples on MalwareBazaar |
| TLSH | T11A74DFD57684C496C8A622719C27AF6123BFFDAEB5B10E0B2217761FF873352650720B |
| TrID | 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | 62e1c088f2789962 (1 x GuLoader) |
| Reporter |  FXOLabs |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
224
Origin country :
BRVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Malware family:
agenttesla
ID:
1
File name:
_42a575352719a76034cd3b2309ffb99728f2be97698a83dfda3eec2b8495b1c1.exe
Verdict:
Malicious activity
Analysis date:
2026-03-11 05:30:42 UTC
Tags:
evasion stealer agenttesla
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
70%
Tags:
injection obfusc
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug blackhole cerber installer installer installer-heuristic masquerade microsoft_visual_cc nsis soft-404 unsafe
Verdict:
Malicious
Labled as:
Cerber.AD1.gen
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan-Spy.Stealer.FTP.C&C Trojan-PSW.Agensla.TCP.C&C Trojan.Win32.Delikle.sb PDM:Trojan.Win32.Generic HEUR:Trojan.Win32.Guloader.gen Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbb
Malware family:
Unlabeled
Verdict:
Unknown
Score:
83%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Detection:
agenttesla
Verdict:
Malicious
Threat:
Family.AGENTTESLA
Threat name:
Win32.Trojan.Nekark
Status:
Malicious
First seen:
2026-03-11 05:30:40 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
19 of 38 (50.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'439 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:agenttesla family:guloader discovery downloader keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Agenttesla family
Guloader family
Guloader,Cloudeye
Unpacked files
SH256 hash:
42a575352719a76034cd3b2309ffb99728f2be97698a83dfda3eec2b8495b1c1
MD5 hash:
2a3745c1412f90d2bdeb21dee92abc04
SHA1 hash:
f54d87c5c25994892a9a8571b87c961e60de6e9a
SH256 hash:
feb6364375d0ab081e9cdf11271c40cb966af295c600903383b0730f0821c0be
MD5 hash:
ca95c9da8cef7062813b989ab9486201
SHA1 hash:
c555af25df3de51aa18d487d47408d5245dba2d1
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.79
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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